• 18-Channel Firework Stepper

    18-Channel Firework Stepper

    Battery-powered 18-channel sequential pyrotechnic initiator controller triggered by qualified 18 V COBRA pulses, with three six-channel RJ45 outputs and lockout after channel 18.

    N

    nsteinseifer

    19 days ago

    0 Uses

    0 Comments

    0 Stars

  • Radxa CM3 Beltpack Carrier

    Radxa CM3 Beltpack Carrier

    Four-layer battery-powered Radxa CM3 beltpack carrier with protected swappable 18650 power, dual XLR-4/TRRS audio, display, illuminated talk keys, and USB recovery access.

    F

    flprx

    21 days ago

    0 Uses

    0 Comments

    0 Stars

  • 868 MHz Horn Pulse Receiver

    868 MHz Horn Pulse Receiver

    Disposable battery-powered EU 868 MHz long-range receiver providing a nominal 12 V, 1 A, 10 ms pulse to a horn at approximately 1 km line of sight.

    U

    unkalumpa

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • HEM27EC Dither Box

    HEM27EC Dither Box

    Battery-powered minimal ST-4 dither timer for iOptron HEM27EC: two AAA cells, ATtiny1616 controller, opto-isolated RA+/RA-/DEC+/DEC- contact closures, physical interval/intensity selectors, DITHER NOW button, and low-power status LED. The previous ESP32-S3 USB-host design is preserved only as a conditional V2 archive.

    P

    pereguerra

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • Smart Pet Collar Sensor Hub 4Xmq

    Smart Pet Collar Sensor Hub 4Xmq

    Battery-powered smart pet collar PCB with ESP32-class wireless MCU, GPS, heart sensing, temperature, motion sensing, microphone, USB programming, and mobile-app data connectivity.

    A

    amirma

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • 9V LED Blinker

    9V LED Blinker

    Hand-solderable 9V battery-powered red LED blinker using a 555 timer in astable mode, an on/off switch, and through-hole support components for approximately one blink per second.

    E

    emasicollins

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • Fixer Demo 01

    Fixer Demo 01

    Hand-solderable 9V battery-powered red LED blinker using a 555 timer in astable mode, an on/off switch, and through-hole support components for approximately one blink per second.

    A

    aherbez-flux

    a day ago

    0 Uses

    0 Comments

    0 Stars

  • 9V LED Blinker

    9V LED Blinker

    Hand-solderable 9V battery-powered red LED blinker using a 555 timer astable circuit, an on/off switch, and through-hole components.

    R

    ryanfitztestaccnt

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • 9V 555 LED Blinker

    9V 555 LED Blinker

    Through-hole 9V battery-powered 555 timer circuit that blinks a red LED about once per second through an on/off switch.

    R

    ryanf

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • Smart Espresso Scale

    Smart Espresso Scale

    Battery-powered smart espresso scale with BLE/WiFi-capable MCU, load-cell measurement, OLED interface, USB-C charging, and debug/programming access.

    N

    natarius

    +

    U

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32-C6 BNO086 Sensor Board

    ESP32-C6 BNO086 Sensor Board

    Battery-powered narrow ESP32-C6 sensor board with centered BNO086 IMU, RGB status LED, SMD vibration motor, and JST-PH LiPo input regulated to 3.3V.

    D

    david-nupoint

    a month ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32 Pickleball Tracker

    ESP32 Pickleball Tracker

    Compact ESP32-C3 battery-powered pickleball telemetry tracker with high-g IMU, local flash buffering, USB-C LiPo charging, and Wi-Fi/BLE data transmission.

    S

    squidd

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32-C3 ADS1115 pH ORP Sensor Interface 4412

    ESP32-C3 ADS1115 pH ORP Sensor Interface 4412

    ESP32-C3 battery-powered pH and ORP probe interface using ADS1115 differential ADC, MCP6002 through-hole buffers, DS18B20 temperature compensation, and short net labels for firmware handoff.

    S

    sudarakalakshitha

    +

    U

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32-S3 LoRa ePaper Sensor

    ESP32-S3 LoRa ePaper Sensor

    Battery-powered ESP32-S3 LoRa ePaper sensor board with SHT41 environmental sensing, LiPo charging/fuel gauge, 5V input detection, and a 4.2 inch 300x400 b&w ePaper interface in an 85 x 60 mm low-profile PCB.

    J

    jkorenzvit

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • pcbkj

    pcbkj

    Hand-solderable 9V battery-powered red LED blinker using a 555 timer astable oscillator with an on/off slide switch.

    M

    mwoq8kjh

    +

    U
    U
    U
    U

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • universajiot

    universajiot

    Hand-solderable 9V battery-powered 555 timer astable circuit that blinks a red LED about once per second through an on/off switch.

    W

    wid1cw

    +

    U
    U
    U
    U
    U
    U
    U

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • 9V 555 LED Blinker

    9V 555 LED Blinker

    Hand-solderable 9V battery-powered red LED blinker using a 555 timer astable oscillator, on/off switch, and through-hole components.

    A

    amirkat

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • ESP32-C6 CO2 Sensor

    ESP32-C6 CO2 Sensor

    Battery-powered ESP32-C6 Thread environmental sensor using SCD41 for temperature and CO2, USB-C for charging/data, LiPo power, and a buck-boost 3.3 V rail.

    A

    amirghasemi21

    20 days ago

    0 Uses

    0 Comments

    0 Stars

  • 9V 555 LED Blinker

    9V 555 LED Blinker

    Hand-solderable 9V battery-powered 555 timer circuit that blinks a red LED at about once per second through an on/off switch.

    P

    phukovsky

    +

    U
    U

    2 months ago

    0 Uses

    0 Comments

    0 Stars

  • thermal monitor

    thermal monitor

    Hand-solderable 9V battery-powered red LED blinker using a 555 timer, on/off switch, and through-hole support components for approximately one blink per second.

    P

    prawinm

    3 months ago

    0 Uses

    0 Comments

    0 Stars

  • 1 Hz 555 LED Blinker gPJ6

    1 Hz 555 LED Blinker gPJ6

    Through-hole 9V battery-powered 555 timer circuit that blinks a red LED approximately once per second using an on/off switch and hand-solderable components.

    B

    brooks

    3 months ago

    0 Uses

    0 Comments

    0 Stars

  • 9V 555 LED Blinker

    9V 555 LED Blinker

    Hand-solderable 9V battery-powered red LED blinker using a 555 timer in astable mode, with on/off switch and required decoupling/bypass capacitors.

    L

    ltembedded

    3 months ago

    0 Uses

    0 Comments

    0 Stars

  • 9V Hand-Solder 555 Blinker

    9V Hand-Solder 555 Blinker

    Hand-solderable 9V battery-powered red LED blinker using a 555 timer astable circuit, on/off switch, and through-hole support components.

    B

    bryan

    3 months ago

    0 Uses

    0 Comments

    0 Stars

  • May 2026 9V 555 LED Blinker

    May 2026 9V 555 LED Blinker

    Through-hole 9V battery-powered 555 timer circuit that blinks a red LED about once per second through an on/off switch, designed for easy hand soldering.

    B

    brooks

    3 months ago

    0 Uses

    0 Comments

    0 Stars

  • EU Smart Environmental Sensor Node

    EU Smart Environmental Sensor Node

    Battery-powered EU-component environmental sensor node using STM32WBA BLE/802.15.4 MCU, gas/particle/CO2/environment/light/audio/camera/radar/tamper sensors, and 14.4V smart Li-ion power.

    B

    batsuev

    3 months ago

    0 Uses

    0 Comments

    0 Stars

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